143073-87-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143073-87-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,0,7 and 3 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 143073-87:
(8*1)+(7*4)+(6*3)+(5*0)+(4*7)+(3*3)+(2*8)+(1*7)=114
114 % 10 = 4
So 143073-87-4 is a valid CAS Registry Number.
143073-87-4Relevant academic research and scientific papers
Synthesis and reactions of substituted pyrazolo-[3,4-d]pyrimidines
Oertel,Vogel,Richter
, p. 251 - 254 (2007/10/02)
The title compounds 4-imino-3-methylthio-4,5,6,7-tetrahydro-pyrazolo[3,4-d]pyrimidines 4 were obtained from 5-amino-4-cyano-3-methylthio-pyrazole (1) and thiophosgene and reaction of the formed isothiocyanate with substituted amines. With iodomethane 4 ga
